DE2105153B2 - SPINDLE NUT - Google Patents

Description

2. Threaded spindle according to claim !, characterized in that the edge surfaces (44, 46) of the one segment (30) are flat and parallel to one another.

?. Threaded spindle according to spoke 2. thereby characterized in that the edge surface (44, 46) of one segment (30) is parallel to the central axis the spindle nut (12).

1. Spindle nut, consisting of an outer
Support ring and an insert containing the thread cooperating with the spindle
a material with good sliding properties, with
the insert is formed from at least three segments which are adjacent to one another with their edge surfaces, characterized in that io are pushed, as a result of which the edge surfaces (44, 46) of the last conditions to be embedded occur (German patent specification zenden segment (30) and the adjacent Kan - 855 024).

ten surfaces (36, 42) of the adjacent segments The present invention is now the task

(32, 34) are designed so that the segment is based on a spindle nut of the aforementioned (30) to create from the inside essentially in a radial direction, in which the use without body scoring ic its end position can be used. borrowed deformation in the support ring who pushed

can and at the same time it is ensured that no Binder is removed between the surfaces to be joined or glued together. This object is basically achieved in that the edge surfaces of the last to be used Segment and the adjacent edge surfaces of the adjacent segments are designed so that the Segment from the inside essentially in a radial direction

4. Spindle nut according to claim 3. thereby device can be used in its end position.
indicates that the planes of the edge surfaces is geometrically expressed at least one segment (44, 46) of one segment (30) equidistant from ment so that the edge surfaces of this segment and the adjacent edge surfaces of the center axis of the spindle nut (12) removed are. adjacent segments perpendicular to an imaginary

5. Spindle nut according to claim 4, characterized in that the plane containing the central axis of the spindle nut indicates that three segments (30, 32, 34) run.

The insert formed by the individual segments of the spindle nut according to the invention is inside fixed in the support ring - or in general terms in the cavity of a body - by that the outer walls of the segments are glued to the inner wall of the support ring. First are not necessarily formed according to the teaching of the invention segments at a distance from the

is inserted into the inner wall of the support ring essentially parallel to the internal thread 40 (14) of the mission. and then by a radial movement on hers

Arranged and preferably by means of an adhesive

medium held. This is where the adhesive

not moved or removed. Finally, this is done in

The invention relates to a spindle nut consisting of an outer support ring and a thread that interacts axially with the segment formed axially into the interior of the spindle, without touching the inner wall of the support, and the insert made of a material good sliding ring or the segments already arranged there, the insert consisting of at least three also inserted and then attached radially to the remaining free edge surfaces adjacent segments. This radial movement of the last is formed. th segment is possible due to the special design. With a known spindle nut, the protruding edge surfaces are possible. Even when fastening the said type, the edge surfaces run between the last segment, so no binding agent is removed or pushed away from the individual segments radially in the direction of the. After arranging, center axis of the spindle nut. At least the last 55 of the last segment can be an expandable mandrel
be inserted into the support ring in the axial direction. If there is a connection between the support ring and

Use by a binding agent is desired, will ensure that the heat generated in the use of this binding agent is pushed out well onto the remaining parts of the spinel segment, at least when the insert is pushed in. As a result, the nut is transferred and is thus derived,
not only poor fastening of at least the subclaims 2 to 6 are advantageous

the last inserted segment, but embodiments and developments of the spin if the binding agent for a good heat cover nut according to the invention is under protection.
transition between the support ring and the segment is to be provided, the invention is referred to below

there is at least the risk that this heat over- on the drawing on the basis of a contributor Medium is not sufficiently available, the game is explained in more detail. It shows

are provided by three parallel, substantially equidistant and opposing channel surfaces (38, 40: 42, 44: 36, 36) are separated from one another.

6. Spindle nut according to one of the preceding claims, characterized in that the inside in the support ring (15) and on the outside of the insert (16) threads (18 and 20) are provided which

ten of the binder to the desired PIaIx keep. The adhesive can have good heat kit properties by adding metal particles or the like.

ρ; ο 1 form a section through the essential parts of the insert. Each of the three with each other in

iner spindle nut according to the invention. Engaging standing or combing, arched

The section 30, 32 and 34 corresponding to FIG. 1 has a section at its ends

but only by using, "edge surface on each of which if the tuisai?

Fio-. Figure 5 is an assembled end exploded view of Figure 5, opposite to Figure 5, correspondingly

• Three sea menie divided use, the line-edge surface of the adjacent segment is una

, nkt is shown in the undivided state (d \ z coincides with this edge surface. The ^ egmeni

Snitu lines are shown by arrows). '32 iit equipped with the edge surfaces 36 and 38.

Fi "4 the plan view of the support ring and the Seement 34 has edge surfaces 40 and <u aai.

orste in this segment arranged, "io At least one segment - in this case the equivalent

Fi "5 the top view of the support ring with the element 30 - has edge surfaces 44 and 46 on, aw

first / and second segment arranged in this, essentially perpendicular to a ^semei " ^sai P ^

Fi σ 6 the plan view of the support ring with all planes run. These selected edges

Chen three segments arranged in this, 44 and 46 are flat, parallel to one another, parallel to

Fig. 7 shows a section through the support ring and 15 of the central axis of the insert and equidistant from

in this arranged insert with an expand- this central axis is removed. It is also possible, men

to equip a bar mandrel for fastening and pressing the indentation as a segment with edge surfaces

cms in the support ring during the unhooking of the venauien perpendicular to a common plane.

äSemittels, 'It is also possible to divide a segment into subsegments

Fi "8 is a schematic description of the distribution. ...

drive, to manufacture and fasten a »mix The segments that form the insert 16, ^Konnc "

the inner space of the support ring matching are made separately from each other, in aic ^,

_F · ™ _there can be the divisions between the segments

D ^; e essential parts of a spindle nut are still referred to as cuts. \ orgefiew'indcspindel, which has a trapezoidal thread, 25 it will, however, pull the insert 16 from a single

<ind in I * 1 a 1 se shows. The threaded spindle 10 has to form a unit and then the insert in ae -

Zt "ößei length Lf, as in F i g. 1. With longitudinal elements of the sections 50, 52 and 54 divide zui,

the threaded spindle 10 is the actual spindle - as indicated by the arrows in F 1 g. 3 shown is the

nut 12 in engagement. This spindle nut 12 provides cuts 50 and 52 are those which are perpendicular to e.n Laner. which run with an internal thread 14 from a common plane to the seg-

is armed. Basically, the spindle nut consists of element 30 to form.

V consists of an outer support ring 15 and a back In the F i g. 4. 5 and 6, st «n procedure for an

«, T / 16 Insert 16 has an external thread and attach an insert * · J" ^u

18, which is shown with an internal thread 20 of the support ring 15. Through this procedure, Stüt / rinces 15 is engaged. The internal thread 35 the outer wall of the insert 16 ^m "J ^r * ^nv - ™

U is formed on the inside of the insert 16, namely the wall of the support ring 15 connected to the Sp.ndet

paiallel to the external thread 18. Furthermore, there is a nut to be formed.

A thread engagement with the thread of the thread The insert is first exemplified by Ge

sp.ndel 10. A turn of either the spindle nuts of the metal or the art to ff «made er P or the threaded spindle 10 relative to the 40 The external thread of the insert and the internal thread

at J ™ part causes an axial movement of the ande-thread of the support ring as well as the «^^ S"

ren part. A section through the insert 16 can be seen in the turn of the insert ^ebe ™ j " ^sh " f ^S £ £

F i 0 "> shown. In this section, the inner thread can be used during the casting of the tin

The thread 14 and the set running parallel to it can also be cast, or you can point to the external thread 18. For better illustration 45 the casting by a ^s P ^ana , ^bh , ^e _e ^b _r ^en ^ _ns ^B ^ ^r ^ ^U _e ^U _in f

If the insert 16 is shown more clearly in the drawing. Then ^α «is used in emc

shares than he is in some application forms. If the number of segments is given by "^ gj

play wise, the use in practice is often dismantled. At least one segment (bu dem ^ Bespie

emc thickness or thickness of 1 mm or less. the segment 30) of the weighted segments t nut

Various materials can be used to manufacture 50 a pair of dividers 50 and 52

of the insert. For example, it may be that the ver perpendicular to a common plane

the insert 16 made of a "Bearium" bronze alloy. rinsit / with the in-

be set up. This alloy consists of 70%. Subsequently, the insert m1 of the in

Se 22.0 lead and 8 «0 Zinii connected to another suitable surface of the support. M ^ Jj «« ⁵

notes The material is polytetrafluoroethylene, which, with 55, has one of the surfaces

compact glass fibers more random or more arbitrary - preferably both - become m, .ein ^ Klet, e

Length and with 4 to 5 »0 molybdenum disulphide impregnated and if ⁿ °" S _o ^a would? Now im

This material has self-lubricating segments, except for segment 30, there are now ^ im

Finances. Of course there are further inside the bushing in the ^^ menden E ₁ ngnff jngeo d

which are pulled apart or at a distance from.nan- 6 ₅ der ^> g · 4 «t the segment 34 dx.ai ung ^

which are illustrated. It can also do more than str.chpunkt.crter representation ^ ranscnuujc

three segments can be used as long as the unbroken V ^ uwnmrMdnSwM ^

represents is that the segments together make a complete radial movement in the direction of aut üic

of the support ring 15. In Fig. 5, the segment 32 is dash-dotted although the most varied of binders are reversible in its axially inserted position and are available, it is from development shown. The extended position takes the advantage of a binder or adhesive on epoxy segment 32 to use after the radial movement in the direction of the base, the thermally conductive particles up to the inner wall of the support ring 15. These are replaced. The particles can be known from Most segments 32 and 34 then lie on the cut of thermally conductive material, for example made of aluminum-54 close together. As the fig. 6 to be found nium and copper exist. With the used is, the segment 30 is then also axially inserted. The term "thermally conductive" is the same as pushed (dash-dotted representation). The parallel in the expression "isolating" to an expression mutually extending cut surfaces of this segment whose properties are to be regarded as relative. Of the mentes 30 are in the gap that has been left free on the term "heat-conducting", as prescribed above. The location of the segment 30 in the gap is turned to indicate a material that between the cuts 52 and 54 conducts heat better after the movement than the adhesive without it In the direction of the inner wall of the support ring, this material additive is added. The thermally conductive particles 15 is shown with solid lines. The channels 15 are then given a corresponding use of the segment 30 introduced last is suitable if its thermal conductivity is significantly higher than run perpendicular to a common plane is that of the binder.

and therefore parallel to the direction of movement the - of course, the cuts must at the This segment in the direction of the inner wall of the edge surfaces of the one essential segment Support ring 15. All segments can therefore not necessarily be flat or in parallel planes be inserted without the binding agent of the lying. It is only necessary that the edge faces Thread wiped during assembly, this one segment parallel to the movement or otherwise is removed. Furthermore, this direction of the segment in the gap that has remained free by ensuring that there are no irregularities. For example, consider a hypothean occur on the inner surface of the insert. 35 table, thin and narrow knife, the always par-familiar Inserts, which consist of segments, generally correspond to the assumed direction of movement of the sen radial incisions. by which the segments of the last segment is held in the gap, so are formed. Allow radial incisions however this knife can be used to cut this no arrangement of the insert in an outer cutting a segment by always cutting it Support ring without removing the binder. 3 ° parallel to the assumed direction of movement while a smooth and uninterrupted interior is kept, but otherwise in wave form or otherwise Surface is maintained. any way approximately in the longitudinal direction After the insert 16 has been inserted into the support ring 15. Two such cuts is built, an expandable mandrel is inserted in these are not necessarily the same to one of these and expanded to form the insert fixed 35 selected segments. At one stare to connect with the inner wall of the support ring. One material for use are three segments required The mandrel is shown in FIG. 7 shown. This one. because a segment is not in an arc of Mandrel consists of an expandable core 60 which can be made from 180 ". If a segment Rubber or an equivalent material. If it were to run over 180 °, it would be necessary. At the end of the core 60, caps 62 and 64 are attached to this segment when it is pushed into the support. If these caps 62 and 64 were deformed together, to the extent that none are pressed, the core inevitably expands contact with the support ring takes place in order to secure after outside and transmits a corresponding infeed that no adhesive during this movement Compressive force due to its being removed by the rubber. If a certain deformation is possible Material properties on the inner surface * s is borrowed. the use of two segments can make the best of it Use. This pressure will continue for so long. one of which maintains an edge surface at its end. until the binder or adhesive has surfaces that are perpendicular to a common have become correspondingly firm. The core will be level. The other segment should then be in then removed by removing the caps d. H. deformed towards the inside to make it into the moved out. Insert the 5 ° outer support ring.

1 sheet of drawings

Claims (1)

Patent claims: (German patent specification 721 870). Furthermore, a plain bearing is known whose bearing shell is divided Even if it is assumed that the flanges for absorbing axial forces of this known bearing shell were missing, so it is not possible to add the second half after arranging the first hallte insert by a radial movement when the first half is already in place. the second half of the bearing shell can only be axially